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The cytoprotective effect of different doses of Sildenafil on indomethacin-induced gastric mucosal damage in rats:
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Background: Sildenafil, a selective phosphodiesterase -5 (PDE-5) inhibitor increases cyclic guanosine monophosphate (cGMP) and amplifies many biological actions of nitric oxide (NO) which is an important mediator of gastric mucosal defense ; was evaluated in this study using different doses for its cytoprotective effect on gastric mucosal damage induced by indomethacin . We also evaluated the effect of this drug on NO production, Prostaglandin E2 (PGE2) synthesis, Myeloperoxidase (MPO) activity, and Interlukin-4 (IL-4) expression.
Methods: The study was performed between April and July 2008 in the Department of Pharmacology / College of Medicine /Baghdad University .It was conducted on 80 adult male albino rats, divided into 8 groups, the first served as a control received the vehicle, the second received indomethacin orally of 60mg/kg .The third and fourth groups were pretreated 30 minutes prior indomethacin with oral sildenafil 10 and 20mg/kg respectively. The other groups were pretreated 30 minutes prior to sildenafil (10and20mg/kg) with intraperitoneal NG-L-Arginine Methyl Ester (L-NAME) 20mg/kg with or without L-Arginine. The rats were then sacrificed after 4 hours and their stomachs were isolated and submitted to macroscopical assessment and for the measurement of the gastric PGE2, MPO, and IL-4.
Results: Sildenafil (10 and 20 mg/kg) pretreatment resulted in a significant (p<0.01) decrease in the gastric damage score. The MPO activity was significantly (p<0.01) decreased, while the level of IL-4 was significantly (p<0.01) increased. On the other hand PGE2 level was not changed. L-NAME given 30 min before 10 and 20 mg/kg sildenafil, significantly (p<0.01) abolished the protective effects of sildenafil and also reversed the effects of sildenafil on MPO activity and IL-4 levels. On the other hand addition of L-Arginine resulted in the restoration of the protective effects of sildenafil which was also reflected on the gastric damage score, MPO activity and IL-4 levels.
Conclusions: The results demonstrate that the injurious effect of indomethacin can be reduced or ameliorated by sildenafil pretreatment, and that the protective effect of sildenafil against
indomethacin was through an NO dependent pathway.

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Publication Date
Mon Apr 01 2024
Journal Name
Iop Conference Series: Earth And Environmental Science
Effect of Inhalation Exposure to Nano-Imidacloprid on Liver and Kidney Functions In Male Rats
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Abstract<p>Pesticide poisoning is a serious global public health issue and is responsible for a sizable number of annual fatalities. This study was designed to examine the potentially harmful effects of adult rats being exposed to imidacloprid (IMD) as a nanoparticle by determining the chronic effect of inhalation of (5,10 and 20) mg/kg/b.w. of nano-imidacloprid for a duration of 60 days. The most important biochemical parameters of the serum liver function parameters were aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase ALP, kidney function [blood urea, creatinine, and urea], and oxidative stress parameters (MDA, GSH, and CAT) in all treated groups when</p> ... Show More
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Publication Date
Thu Mar 30 2017
Journal Name
Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)
Evaluation of the Anti-Inflammatory Effect of Pioglitazone in Experimental Models of Inflammation in Rats
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         The antidiabetic thiozolidinediones (TZDs) a class of peroxisome proliferators-activated receptor (PPAR) ligands has recently been the focus of much interest for their possible role in regulation of inflammatory response. The present study was designed to evaluate the anti-inflammatory activity of pioglitazone in experimental models of inflammation in rats. The present study was conducted to evaluate the anti inflammatory effect of TZDs (pioglitazone 3mg/Kg) on acute, sub acute and chronic model of inflammation by using egg-albumin and formalin–induced paw edema in 72 rats, relative to reference drugs Dexamethasone 5mg/Kg and Piroxicam 5mg/Kg. In each inflammation model, 24 rats wer

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Publication Date
Fri Jul 01 2022
Journal Name
Iraqi Journal Of Science
The effect of D and L- amino Acids on Biofilm Formation in Different Microorganisms
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The D-enantiomers of amino acids have been thought to have relatively insignificant function in biological processes like, D-amino acids are sometimes found in proteins that are not synthesized by ribosomes. While L-amino acids clearly permanent in nature, D-amino acids have previously inapprehensible regulatory roles in the bacterial kingdom, any diverse of bacterial phyla made from these D-amino acids regulate cell wall remodeling in stationary phase and cause biofilm dispersal in aging bacterial communities. Clarification the mechanism by which D-amino acids given cell wall reorganization and biofilm disassembly will undoubtedly discover new paradigms for understanding how extra cytoplasmic processes are regulated as well as lead to d

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Publication Date
Mon Apr 01 2024
Journal Name
Latin American Journal Of Pharmacy
The protective effect of iraqi Juniperus oxycedrus plant on acute kidney injury induced by lipopolysaccharide in mice model
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Inflammatory control is essential to diminish injury and make renal injury treatment simpler. Proposed therapeutics have primarily targeted pro-inflammatory variables. Juniperus oxycedrus was frequently used to treat a variety of infectious disorders, hyperglycemia, obesity, TB, bronchitis, inflammation, and pneumonia. Juniperus oxycedrus twigs and leaves were defatted with n-hexane using Soxhlet apparatus then the residue of plant material dried and re-extracted sequentially by two different solvents Ethylacetate and methanol. The pro-inflammatory markers IL-1 and iNOS, as well as the potential kidney biomarker KIM-1, TNF-α, and transcription factor NF-KB were measured using the RealTime Quantitative qPCR method. The results showed that J

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Publication Date
Fri Oct 14 2016
Journal Name
Functional Pavement Design
Effect of different variables on asphalt mechanical properties
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Permanent deformation (rutting) of asphalt mixtures is one of the major forms of distress. Aggregate gradation is one of the most important factors affecting the permanent deformation of asphalt mixtures. Other variables are also important to understand their effects on the mixture such as temperature, binder content and compaction level. For this purpose 6 different aggregate gradations have been chosen and each one of them has been manufactured / tested with different variables. The results showed that at relatively low temperature there is little effect of aggregate packing on the permanent deformation. However, as the temperature increases the effect of gradation becomes apparent, in that the better the packing the better the resistance

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Publication Date
Wed May 01 2019
Journal Name
The Journal Of Immunology
Protective effect of resveratrol on the integrity of alveolar and intestinal epithelial barrier in SEB-induced acute lung injury
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Abstract<p>Acute lung injury (ALI) is a state of inflammation that breaks down the lung endothelial and epithelial cell barriers. In the current study, we investigated the role of resveratrol (RES) in regulating the expression and functions of tight junction proteins (TJP) in epithelial cell responses following exposure to this superantigen. To this end, C3H mice were given resveratrol orally twice prior to intranasal challenge with lethal SEB doses. 16S rRNA results showed that there were microbes transported in the blood in addition to the lung and colonic tissues. For this purpose, we used a reporter E. coli-GFP labeled bacterium to monitor and examine the viability of this bacterium in case </p> ... Show More
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Publication Date
Fri Sep 30 2022
Journal Name
Iraqi Journal Of Science
The Effect of Using the Different Satellite Spatial Resolution on the Fusion Technique
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      Bilinear interpolation and use of perceptual color spaces (HSL, HSV, LAB, and LUV) fusion techniques are presented to improve spatial and spectral characteristics of the multispectral image that has a low resolution to match the high spatial resolution of a panchromatic image for different satellites image data (Orbview-3 and Landsat-7) for the same region. The Signal-to-Noise Ratio (SNR) fidelity criterion for achromatic information has been calculated, as well as the mean color-shifting parameters that computed the ratio of chromatic information loss of the RGB compound inside each pixel to evaluate the quality of the fused images. The results showed the superiority of HSL color space to fuse images over the rest of the spac

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Publication Date
Thu Mar 30 2023
Journal Name
Iraqi Journal Of Science
Evaluating the phenomenological approach models in predicting the Neutron Induced Deuteron Emission Spectra from Different reactions
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A neutron induced deuteron emission spectra and double differential cross-sections (DDX), in 27Al (n, D) 26Mg, 51V (n, D)50Ti , 54Fe ( n, D)53Mn and 63Cu (n, D) 62Ni reactions, have been investigated using the phenomenological approach model of Kalbach. The pre-equilibrium stage of the compound nucleus formation is considered the main pivot in the discription of cross-section, while the equilibrium (pick up or knock out ) process is analyzed in the framework of the statistical theory of cluster reactions, Feshbach, Kerman, and Koonin (FKK) model. To constrain the applicable parameterization as much as possible and to assess the predictive power of these models, the calculated results have been compared with the experimental data and othe

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Publication Date
Sun Jul 04 2010
Journal Name
Journal Of The Faculty Of Medicine Baghdad
The role of pepsinogen test among the patients with gastric cancer.
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Background: Identification the relationship of pepsinogen test (pepsinogenI and I /pepsinogen II ratio) and gastric cancer patients make the gastric cancer early diagnosed and prolong the life surviving rate.
Patients and Methods: Serum pepsinogen I and pepsinogen II (PG I and PG I / PG II ratio) measured in 50 patients with gastric cancer ,30 gastritis patients diagnosed , and 16 healthy control by using enzyme immunoassay in those study groups, and the results of PG I and PG I / PG II ratio were comparing to 50 gastric cancer patients whom diagnosed histopathologically according the stomach regions, while the gastritis patients diagnosed endoscopically.
Results: This study showed that the age of pati

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Publication Date
Sun Mar 04 2018
Journal Name
Iraqi Journal Of Science
Alcoholic extract effect of Withania somnifera roots on cholesterol diet induced hyperlipidemia in male rabbits
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     The current study was used 20 male rabbits that divided into four groups (consist of five rabbits in each group), The first group was considered as control and fed normal diet and given tap water, The second group was consisted of rabbits that fed on high cholesterol diet for six weeks, The third group was consisted of rabbits that fed on high cholesterol diet and 50mg root extract for six weeks, The forth group was consisted of rabbits that fed on high cholesterol diet and 100mg root extract for six weeks. The male rabbits that feeding on high cholesterol diet showed significant increased (P < 0.05) the levels of cholesterol, triglyceride, LDL, VLDL, MDA and HMG-CoA reductase while HDL and GSH levels were sig

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